US3493567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted diazocinophenothiazines
Assignee: Dart Industries Inc
•
Filing: 1968-01-22
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Granted: 1970-02-03
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Expires: 1988-01-22
Abstract
No abstract record available.
Inventors
- 👤 Marshall D Draper
- 👤 Murle W Klohs
- 👤 Francis J Petracek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:18
CPC Classifications
C; C09; C09J; C09J175/00; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08L; C08L77/00; C09J163/00; C09J5/00; C09J5/10; C08G2170/00; C08G2170/20; C08L63/00; C08L75/00; C09J2463/00; C09J2475/00; Y; Y10; Y10S; Y10S524/00; Y10S524/906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2919271A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |